My biggest gripe with online maps is the wrong designations. As has been said, Google Maps doesn't show banners. I've seen some areas where ALT banners are shown with a letter (ie US 50 Alternate as US 50A). There's also the fact that Google Maps shows state routes, county routes and possibly others all with just an oval--they could at least use a rectangle for county routes. Sure the directions state it clearly, but its nice to have the visual cues match up as well.

Quote

Didn't Nevada renumber its state highways a number of years ago? I remember seeing it in old Rand-McNally atlases, but I think that was before Mapquest even existed.

Quote

Yeah, back in the 1970s (I'm tempted to say '74). Mapquest doesn't have many of those, thankfully, but they do have a lot of highways decommissioned in the 80s, 90s, and 00s.

Nevada's renumbering was approved internally on July 1, 1976. The new and old numbers first appeared on NDOT's official maps with the 1978-79 version and again on the 1980-81 version. A 1982 NDOT map had only new numbers (but mostly only showed routes numbered 499 and below)

They also show "hidden" routes. US 31 through Tennessee appears on Google maps plus some paper maps as well, duplexed with TN 6. I have yet to see a TN 6 sign. (Someone did post something like that for the Ellingtion Parkway section of US 31E in north Nashville, they put the "hidden" route on the median signs.)

I saw it this they marked the hidden routes of Georgia Interstates as well as FL-91 (Florida turnpike)

Taking a look at goggle in two areas of Indiana, you see IN St Rt 53 running through De Motte, IN. It stays with U.S. 231 to just after Ring Grove. From Lafayette IN 43 joins U.S. 231, until Southport, where another section of IN 43 starts. This could just be a unlabled, unmaped (not showing on state maps), route for IN 43. One more!...At Bremen, evendently IN St Rt 6 (which does not exisit) runs along the entire length of IN St Rt 106.

Yes, I was looking at eastern Tennessee yesterday and US 321 switched from US 321 to TN 321 when it does no such thing!

Also, that part of Tennessee has a number of suffixed routes (US 11E/W, US 19E/W, US 25E/W) and they would sometimes say, for example, US 11E sometimes and just US 11 others. I'm sure that would confuse people to see two parallel US 11's!